Means for typing, verifying and printing



May 31, 1960 E. O. ROGGENSTEIN MEANS FOR TYPING, VERIFYING AND PRINTINGFiled Dec. 20, 1954 10 Sheets-$heet 1 INVENTOR. EDWlN O. ROGGENSTEIN By)L L ATTO'RNEY May 31, 1960 E. o. ROGGENSTEIN Filed Dec. 20; 1954 FIGZ10 Sheets-Sheet 2 INVENTOR. EDWIN O. ROGGENSTEIN BY jhjfi ATTORNEY y1960 E. o. ROGGENSTEIN 2,938,952

' MEANS FOR TYPING, VERIFYING AND PRINTING Filed Dec. 20, 1954 10Sheets-Sheet 3 FIG3 UNSHIFT. smcu: CHARSHIFT. I27 WT Lgckw s i J F|G.4

UIUIbUN L mmvrox.

EDWIN O. ROGGENSTEIN ATTORNEY TYPE R M y 1950 E. o. ROGGENSTEIN2,938,952

MEANS FOR TYPING, VERIFYING AND PRINTING Filed Dec. 20, 1954 10Sheets-Sheet 4 FIG. 5

INVENTOR. EDWIN 0. R066 ENSTE IN ATTORNEY y 31, 1960 E. o. ROGGENSTEIN2,938,952

MEANS FOR TYPING, VERIFYING AND PRINTING Filed Dec. 20, 1954 10Sheets-Sheet 5 INVENTOR. EDWIN O. ROGGENSTEIN ATTORNEY y 1960 E. o.ROGGENSTEIN 2,938,952

MEANS FOR TYPING, VERIFYING AND PRINTING Filed D60. 20, 1954 10Sheets-Sheet 6 EDWIN o. ROGGENSTEIN AT TORNEY May 31, 1960 E. o.ROGGENSTEIN 2 MEANS FOR TYPING, VERIFYING AND PRINTING Filed Dec. 20,1954 1o Sheets-Sheet 7 FIGS INVENTOR. EDWIN O. ROGGENSTEIN AKIORNEY May31, 1960 E. o. ROGGENSTEXN 2,933,952

MEANS FOR TYPING, VERIFYING AND PRINTING l0 Sheets-Sheet 8 Filed Dec.20, 1954 INVENTOR. EDWIN O. ROGGENSTEIN AT TORNEIY y 31, 1960 E. o.ROGGENSTEIN 2,938,952

MEANS FOR TYPING, VERIFYING AND PRINTING Filed Dec. 20, 1954 10Sheets-Sheet 9 f no l. 5

INVENTOR. EDWIN 0. ROGGENSTEIN BY iii/4621.7

ATTORNEY May 31, 1960 E. o. ROGGENSTEIN ,9 8,

MEANS FOR TYPING, VERIFYING AND PRINTING Filed Dec. 20, 1954 10Sheets-Sheet 1L0 TYPER KEY SINGLE SHIFT 5/595 READER INVENTOR. EDWIN O.ROGGE NSTEIN ATTORNEY FIGII 2,938,952 MEANS FOR TYPING, VERIFYING ANDPRINTING Edwin G. Roggenstein, Fairfield, Conn., assignor, by mesne.assignments, to Sperry Rand Corporation, New York, N.Y., a corporationof Delaware Filed Dec. 20, 1954, Ser. No. 476,299 24 Claims. (Cl.178-17) This invention relates to a typewriting machine and inparticular to one adapted to be manually and automatically controlled.

In the use of electronic calculators that operate at high speed theinformation to be fed thereto is prepared and verified in advance. Thisdata is usually in the form of code applied to a tape or a card bymagnetic spotting as disclosed in copending application Serial No.375,359, filed August 20, 1953. The output of the calculators is usuallyin'code, and applied also to a tape in the manner above referred to, andan important object of the invention is to provide a machine in which anoperator, copying original data, can make a typewritten record of thesame, and at the same time cause the data to be encoded for applicationin code form to a tape magnetically.

A further object of the invention is to provide for adjustment ofthemachine so that when the data has been recorded on the tape, it may besubject to verification as the tape is read and the data decoded forcontrolling comparison typing, done manually by the operator, from theoriginal data.

A still further object of the invention is to provide a machine of thecharacter referred to in which a typewritten record can be madeautomatically of the data read from the tape through a tape reader orsensing mechanism of well known type and decoded by means hereindisclosed to control the operation of the machine. r Other objects ofthe invention are the provision of a machine in which; the feed of atape can be coordinated with the movements of a typewriter carriage sothat matter entered on the tape can be read back for checking orcorrection; the code unit may be used both for encoding the typedmaterial and for decoding the data read from the tape for controllingthe operation of the machine; the mechanism of the machine can, by theuse of simple adjustments of the parts from the keyboard,

be operated to adapt the machine for use as a typer, a verifier or aprinter; the code unit'operating as an encoder or decoder can beadjusted to handle upper or lower case characters or symbols, asdesired, by manual operation fromthe keyboard or automatically from thetape being read; a minimum number of parts are employed to produce asimplified construction which can be manufactured and maintained at aminimum cost and in which interlock means is provided to preventoperation of the machine unless set for a specific use and to preventaccidental actuation of the keys after a correction operation.

Other objects and advantages of the invention will be apparent duringthe course of the following description. In the accompanying drawing,forming a partof this specification, and in which like numerals areemployed to designate like parts throughout the same, Fig. 1 is a viewin sectional elevation from front to back of the. major portion of amachine constructed in accordance with the invention and showing therelative PQSitiQns of the various parts of the structure;

1 Fig. 2, is an enlarged view in sectional elevation of.

2 the key controlled power mechanism and the combina tion encoding anddecoding mechanism;

Fig. 3 is a plan view of the left end of the keyboard showing thelocation of keys for converting the machine for use as a printer, typeror verifier;

Fig. 4 is a plan view of the left end of the code slides shown in Fig.2;

Fig. 5 is a front to rear view through the machine showing the relativeposition of the parts when the ma chine is conditioned for operation asa typer by adjust-' ment of the typer key; Fig. 6 is a view similar toFig. 5 showing the parts adjusted to condition the machine when theverify key is latched down;

Fig. 7 is a view similar to set for operation as a printer when thecorresponding the code slides and the coacting selector bar and stop:pin arm units;

Fig. 9 is a front to rear view through the machine showing the caseshift mechanism in its relation to the code mechanism;

Fig. 10 is a view in perspective, showing the parts in explodedrelation. and illustrating the clutch and other control members that areadjusted by the printer, typer and verify keys; and

Fig. 11 is a wiring diagram showing the parts con trolled thereby,schematically.

Referring to the drawing in detail, and in particular to Figs. 1 and 2,a power operated typewriter is illustrated which includes side frames 20and 21 connected by' a carriage runway 22 supporting a movable platencar riage 23; a paper feed roll assembly 24; and escapement: assembly 25operated by the universal bar 26, for controlling the feed of thecarriage in letter space direction; a shift mechanism 27 for raising andlowering a type segment '28 for upper and lower case printingrespectively; a motor 29 having a suitable driving connection with apower roll shaft 30 and a power roll 31 on said shaft;

ribbon feed and vibrating mechanisms 32 and 33, re-' spectively; anunder frame 34, hinged to the frame of the typewriter, including top,front and side walls 35, 36 and 37, respectively, and suitable crossbars and rods for supporting the operating parts of the structure which"are encased in a panelled housing 38. The keys of a keyboard 39 areoperable to cause characters to be printed on a record or Work sheet,held about a platen 41, and to control the operation of the typewriter.

Operation, manually or automatically, of any of the key levers 42 of thekeyboard, will turn an eccentric cam roller 43 into engagement with theconstantly operating power roll 31, through a key lever power mechanism44, to raise a latter will cause a type bar 'bellcrank 49 type head 51,of a type bar 52, against to swing the the platen 41 through a pull link53. One of the key lever controlled mechanisms 44 is provided for eachkey lever 42 which carries a pin 54 overlying the tail of a power tripbelle crank 55.

' from a tape for comparison with the for the correction of errors andfor reading back the data P n d M 3 9 .0

for verifying operation Fig. 5 showing the parts power arm 46 and apower arm extension 47 so that a roller 48 on the free end of the.

as a printer when on the tape upon failure of the verifier to check. Inthe use of magnetic tapes, upon which the encoded data is recorded andfrom which data to be decoded is read as disclosed in application SerialNo. 375,359, the tape would be first prepared by the typer, thenverified and used, for example, in a high speed electronic computer. Theoutput of the latter, entered on a tape, would then be typewrittenautomatically by the printer. For con venience, the machine will bedescribed first as a typer, then as a verifier and finally as a printerafter the structure of the combination encoding and decoding mechanismor unit 56 (Figs. 1, 2 and 5), used with each of these operatingdefinitions, is explained.

The data typed on a paper carried by the platen 41 is encoded formagnetic recording on a tape'and the data so recorded on the tape isread and decoded for printing and verification, the recording andreadingin the case of a magnetic tape being done'by ,a recording andreading head unit, of the magnetic type having seven or more codechannels, as disclosed in Patent 2,618,709 granted November 18, 1952, toI. P. Eckert et al. In the use of the. tape, separate recording andreading units 50 and 57 respectively are used. The code unit 56, Figs.5, 6, 7 and -8 includes a shaft 58, extending parallel to and beneaththe rear portion of the top wall 35, which shaft pivotally supports therear ends of forwardly extending parallel selector bars 59. Each of thelatter coincides with a key lever 42 bearing a character or a symbol andis adapted to be operatively connected to the power trip bellcrank 55,corresponding to said key lever, through a hook link 61 spring biased,in a guide bracket 62, Fig. 2 out of alignment with the uncinate end ofa pendant 63 which is pivoted to a power trip bellcrank 55 and is springheld in a slotted guide plate 64. Each selector bar 59 has associatedtherewith an auxiliary stop pin carrier arm 66 also pivoted on shaft 58and connected by a guide stud and washer device 67 to said bar for shortswinging movement relatively thereto. The forward portion of the arm ischannelled to provide upper and lower perforated guide flanges 68 and 69respectively for supporting vertical flat stop pins 71 widened in theirlower portions as at 72 and provided with cars 73 engaging the lowerflange 69 to limit the downward movement of the pins under action oftheir compression springs 74. The upward movement of the arm 66 islimited by engagement of the lower flange 69 with the upper edge of acut-out 76 in the associated selector bar 59. The combined thickness ofthe pins 72 and the associated bar 59 is such that both may fit intocode serration of code slides as will be later explained. The upper edgeof each pin arm 66, adjacent its channelled portion, is shaped toprovide a vertical extension 77, passing through the top wall 35 and aguide bracket 81, for engagement by one end 82 of a rock lever 83pivoted on a shaft 84 in a bracket 86. The shaft 84 supports a lift bail87 underlying all of said levers 83 and urged against the under side ofthe latter by a spring 88 connected to the free end 89 0f one of thebellcrank end arms 91 of the bail, which end arm is adapted to operate aswitch 92, Fig. 2. The selector bars 59 are provided with aligned topedge rabbet openings 93 through which passes a pin bail 94 having leverarms 96 pivotally supported from the top plate 35 and tensioned by aspring to keep a nose 97, on one of the arms, against a limit pin 98 andthe free end of said ar-m spaced from a key restoring switch 99. Eachselector bar 59, at its forward end, passes over a gable shaped lift bar101, through a guide slot in the front wall 36 and beneath a stud 102that projects from the free end of a tension arm 103 pivoted on a crossshaft 104, which arm is urged downwardly with greater'force by a spring105 than the extremity of the bar 59 is urged upwardly by its spring106. The free end of each bar 59, is thus spring supported to resist anyaccidental movement with the movement of its associated pin carrier'66 91 3? 'f is P h down, bya rock lever .83.

4 The lift bar 101 is mounted at its ends in spaced lift arms 107slotted at their upper ends to be guided over studs 108 carried inbrackets 109, Fig. 2, mounted on the inside of the front wall 36. Thearms 107 are each supported on an eccentric disk 110 Fig. 10, keyed to aclutch shaft 111 axially aligned. with a stud shaft 112 driven through asuitable pulley and belt connection 113 from the power roll shaft 30.The shafts 111 and 112 are connected by a one-revolution clutch 114consisting of a reverse detent disk 116 and a stop disk 117. A spring'118, Fig. 6 coiled about the abutting ends of the shafts 111 and 112has one end secured in the reverse detent disk 116 and the other andextended for engagement bya pin 119 carried on the stop disk 117. Disk116 is provided with diametrically opposite teeth 120, and disk 117 isprovided with a single tooth 121 for engagement by either a detentarmature 122 controlled by a a magnet 123 or a stop arm 124. Either ofthe teeth 120 of the disk 116 is engaged by a spring urged pawl 126.Upon energization of the magnet as will be later described, the armaturewill release the stop disk and the spring will grip the abutting ends ofthe shafts 112 and- 111 to drive the latter. When the disk 17 is engagedby either the armature or the stop arm 124, the spring will be expandedby its turning pressure against the pin 119 and the shaft 111 will stoprotating.

The forwardly extending selector bars 59 are disposed at right angles totwo sets of laterally extending parallel code slides which are mountedfor endwise sliding movement in suitable slots in the side walls 37 ofthe frame 34. The slides are arranged in two sets, one corresponding tolower case as at 127 and the other to upper case as at 128. The slidesof group 127 are mounted on rollers 129 and, as shown in Fig. 8, aresupported in a raised operating position while the slides of group 128are supported on rollers 131 in a lower non-operating position. Therollers are carried in case shift arms 132 pivoted as at 133 in framebrackets and connected by a shift bar 134 for rocking movement underinfluence of a case shift bellcrank 136, which constitutes an armatureoperated by a magnet 135, to selectively place either group of codeslides in position for use. The arms 132 are urged counterclockwise by aspring to yieldably hold the slides 127 in uppermost position. The codeslides 127,

128 are differentially serrated along their upper edges to provide codeslots 137 some of which are laterally aligned when the slides areunmoved and others of which are aligned when the slidw are moved endwiseby the movement of pivoted slide armatures 138 when actuating magnets139 are energized. The armature of the magnets 139, Figs. 2 and 5, aredesignated as l, 2, 3, 4, 5, "6 and 7 to correspond with a slide of eachgroup. Eightslid'es are indicated to show that any number may beemployed, but, for the purpose of illustration only seven slides areused which, through springs .141, are biased toward the left side of themachine against a front to rear stop rod 142 secured to the side wall 37and passing through aligned openings in said slides. The latter, attheir left and right ends, are shaped to provide upper tabs 143 andlower undercut tabs 144 respectively for engagement by the upper offsetends of the armatures 1,9, 3,, 5, (i779 62,! 64,! 56,! shown in Fig. 4,a selector bar 59 corresponding to letter A will move down into thealigned notches of all seven right a switch 146, corresponding to eachslide, will be closed for controlling a record circuit as will be laterexplained.

Typer When the machine is to be conditioned for manual I operation toprint data on a sheet of paper on the platen 41, to encode the databeing typed and to record said encoded information on a tape through theuse of the head unit 50 operating asa recorder, a typer key 147,

Fig. 5, at the left side of the keyboard, having a notch 148 and anoffset 149 in its stern 151 which extends through a guide latch platelatched by the action of its spring 153. The downward movement of key147 swings a link 154 about a pivot pin 156,

guided by a pin 159, the detent armature 122 from the clutch stop disk117. At the same time, the stop arm 124 moves down into the path of thetooth 121 that was released by the detent 122 and the clutch isdisconnected after a half revolution of the eccentric 110 has loweredthe lift bar 101 to the position shown in Figure 5. The lower end of theactuator 157 carries an adjusting screw means 160 for close control ofthe release action of the detent armature 122. In addition to the stoparm 124 the actuator 157 is shaped to provide a cam edge 161 which,through a pin 162 on a latch link 163 pushes the hooked lower end 164 ofthe latch link beneath a stud 165 projecting from the lift arm 107 sothat, upon a lowering movement of the latter, the link 163 will rock atrifurcate crank 166 to cause a free end 167 thereof to move a detentbail slide 168, through an interponent. The latter, in the nature of apin 169 is held against the lip 171, of the slide 168, by a spring 172which pulls on a link 173 in the lower end of which the interponent pin169 is carried. The link 173 is pivoted to one end of a lever 174 to belater referred to. When the interponent 169 is not raised out of rangeof the crank end 167, the slide 168 will swing the lower ends of a rowof transfer pins 176 from over the upper edges of the selector bars 59and into register with the pin bail 94 to operate the switch 99 for apurpose to be later described. One pin 176 is provided for each of thetypewriter key levers 42 and is yieldably maintained in raised positionby a spring 177 which rests on the slide 168 and pushes a flangedportion 178 of the pin against the underside of the bracket 62. Theupper end of each pin 176 lies beneath the nose of a dog 179 dependingfrom each key lever 42. A suitable ball lock arm 180, Fig. 2, formingpart of the power lever mechanism 44, is adapted to fit between theballs 181 of a key lever lock 182 which prevents operation of more thanone key lever at a time. The slide 168, through a link 183, may rock alever 184 to move a detent bail 186 from over the shouldered ends 187 ofall of the rock levers 83. The latter are each connected by a spring 188with a break link 189 having a pin 191 held in contact with the upperedge of an associated rock lever 83. The links 189 are pivoted on theshaft 84 and have pin and slot connections 192 with bellcranks 193 whichin turn have pin and slot connections 194 with the type bar bellcranks49.

Reference to Figs. 4 and 8 will show that the combined thickness of eachselector bar 59 and an associated stop pin 71 is slightly less than thewidth of any code slot 137 so that any selector bar and its pins can fitinto the code slots when the combination is lowered as will now.

be explained. After the typer key 147 has been latched down the operatorproceeds with the typing to make a visible record of the data on papercarried by the platen and simultaneously enter it on the tape after itis encoded. This is done, as exemplified by operation of the a key, bypressure on the latter a key to cause the eccentric cam roller 43 toengage and be operated by the constantly rotating power roll 31 to liftthe power arm extension 47 and throw the type bar on a printing strokethrough operation of the type bar bellcrank 49 and pull link 53. Uponoperation of the bellcrank 49 the break link 189 is swung clockwise bythe action of the bellcrank 1 93 and the tension of spring 188 willcause the end 82 of rock lever 83 to push down on the extension 77 ofthe stop pin arm 66 against the resistance of the bail 87. As the stoppin arm 66 lowers, the pins 72 thereof will enter the code notches inthe lower case slides 2, *4, 6" and 7 152, is pushed down andwhichlatter is supported in the bracket 62, so that a vertical actuator 157,pivoted to the link as at 158 and moves downwardly and disengages Iabove referred to.

before the free end 89 of the bail arm 91 closes the switch 92.- Closingof the latter will energize all of the magnets; 139, Fig; 8, to causethe armatures 138 to push against the slides 127 with the result thatthe ones not held by the pins, as l, 3 and 5, will be moved endwise toclose their respective switches 146 and energizea record circuitincluding the channel coils of a magnetic recording head 50 so that acoded representation of the letter a will be entered on the tape.Inasmuch as all of the functional keys of the machine have operationsymbols, the general circuit of the device includes magnets for theoperation of the various controls such as case shift, space, backspace,tabulate, carriage return, etc. Upon operation of the space andcharacter key levers 42, a compound switch 78, Fig. l, operated bytheuniversal bar 26, opens a circuit to the magnets 139 through an arm 79,and through another arm closes a circuit to move the tape in characterspace movement, as will be later explained.

Verifier In the operation of the machine as a verifier, the head unit orreader 57 reads the tape code symbols as the tape is advanced insynchronism with the typewriter carriage in the manner disclosed inapplication Serial No. 375,359 A circuit including the reading head unit57 and the magnets 139, corresponding to the code slides 1, 3 and 5, isenergized as the unit reads the code character corresponding, forinstance, to the letter a. The magnets operate the slides to align thenotches of the slides 1, 3 and 5 with the notches in the other slides sothat, if the typist, who is copying the data of the tape from anoriginal copy, strikes the a key, this letter will be printed by thetype head 51. To condition the machine for operation as a Verifier aspecial key 196, Fig. 6, having a notch 197 for latching engagement withthe plate 152 depressed and lowers with it the the actionof the pin 198on key 197 bearing on the offset 149 of the stem 151 of key 147. Thelatter is not latched in the plate 152 but rocks the link 154 to lowerthe actuator 157 to cause the release of the clutch stop disk 117 by thedetent armature 122 through the adjusting screw 160 and at the same timeto lower the stop arm 124 to catch the released tooth 121 permitting aone-half revolution of the clutch which lowers the lift bar 101 as shownin Fig. 6. The key 196 has the lower end of its shank 199 pivoted as at201 to the outer end of a forwardly extending pin arm 202, whose pin 203overlies the free end of the interponent lever 174 to rock the latterabout its pivot when the arm 202 is pushed down about its pivot 156.This action, through link 173, lifts the interponent pin 169 out ofrange of the free end 167 of the crank 166 so that the slide 168 is notmoved when the crank is operated by the downward movement of theactuator 157. The pins 176 are consequently held in alignment with theupper edges of the selector bars 59 and When the letter a key lever isdepressed, the associated pin 176 will push the corresponding selectorbar 59 down, if the code slides 127 have been set in accordance with theletter a as read from the tape by the unit 57. The end of arm 202 has anoffset portion 205 which underlies one arm of a switch bail 214 to belater referred to, so that when the verify shown in Fig. 6, the readercircuits to the magnets 139 are completed for the characters sensed bythe head 57.

and having a pm 198, is Typer key 147, through It is evident that if thetyping, done manually by the settings of the code slides be aware thatan error is When the lift bar 101 is lowered the heel portions 206 ofthe tension arms 103 to counterkey is latched down as selector barcannot be de- 59 are normally urged downand pulled upwardly by the"clutch, the pivotal movement of the crank 166 will bring a bail 204 ofthe latter up under act the downward force of the springs 105 so thatthe selector bars can be pushed down, against the resistance of thesprings 106, by the manual operation of the pins 176. When the bars 59operate, the hook links do not engage the pendants 63 because theprinter key has not been latched down.

Printer When the machine is to be used to print the data read directlyfrom the tape, automatically, a printer key 207 is latched down byengagement of its notch 208 with the latch plate 152. The lower end ofthe key 207 is pivoted as at 209 to the forward end of a bail arm 210pivoted as at 156 and "shaped to provide an offset 211 and a bail 212common to all of the hook links 61 which are held against the edge ofthe bail by springs 213. Operation of the keys 207 holds the upperhooked ends of the links 61 over the aduncous ends of the pendants 63 sothat, as any selector bar 59 is pulled down, by the action of theassociated spring 105 to fit into the properly aligned notches of thecode slides 127 or 128, the corresponding key lever power mechanism 44is conditioned for opera tion by the pull of the pendant 63 on the powertrip bellcrank. 55. The offset 211 swings the other arm ofthe switchbail 214, pivoted on 156, for operating switches 215, Figs. 7 and 11.When the key 207 is latched down the selected reader circuits throughmagnets 139 are completed by engagement .of switches 2:15 with theswitch contacts 216. When the key 207 is unlatched, the switch contacts220- complete the circuits through all of the magnets 139.

When the head unit 57 operates as a reader for the tape the coded dataof the channels of the latter will be suitably amplified and transmittedas current to energize the magnets 139 to pull on the armatures 138 andmove the slides 1, 3 and 5 corresponding to the code of the letter a.The magnet 123 of the one revolution clutch 114 is also energized andoperation of the clutch pulls the lift arms 107 and the lift bar 101down to allow the tension arms 103 to press down on the forward ends ofthe selector bars 59 which action occurs each time after the code slideshave been adjusted by the action of their armature controlling magnets139. Operation of the type bar bellcranks 49 will not cause operation ofthe rock levers 83, Fig. 2, because the actuator 157 is not moved andthe latch link 163 is not adjusted thereby to swing the crank 166. Theslide 168 and link 183, therefore, maintains the bail 186 in detentiveposition with respect to said rock levers 83, with the break links 189being free to operate independently of the latter. As each letter orsymbol is read from the tape, the code slides are set and permit oneselector bar to be pulled down into the laterally aligned code notchesthereof so that the hook link 61 of said bar will cause operation of thecorresponding type bar through the associated key lever power mechanism44. As the type bar 52 actuates the usual universal bar 26 a switch,Fig. 1, is operated to break the circuit through contact 79.

If during the verifying operation, the typist is unable to depress a keyit is evident that a wrong key has been struck or that an incorrectcharacter has been sensed in the tape. In the'latter case the operatormay read the character in the tape by releasing the verifier key 196 anddepressing the printer key 207 so that the magnet 123 operates'theclutch 114 and the lift bar 101 allows all of the selector bars 59 todrop down so that the one bar 59, that will fit into the notches of thecode slides, will operate the corresponding type bar 52 through the hooklink 61, pendant 63 and the associated key lever power mechanism 44.This use of the printer operation may be referred to as the visualreading or data indicating means. Operation of a backspace key 40 (Fig.3) as explained in the application S.N. 375,359 will erase the incorrectcharacter on the tape to permit the correctone to be entered when theoperator converts the machine to a typer" by operating key 147 after thekey 207 has been released.

During verification the key 196 is latched down and when an error isfound, the verify key is unlatched and the typer key 147 is then latcheddown. This operates the clutch 114 one-half a revolution to lower thelift bar 101 and operate detent slide 168 so that the transfer pins 176overlie the bail 94 and the detent bail 186 is moved to release positionwith respect to the rock levers 83. In the use of the magnetic recordinghead 50, when the typewriter carriage 23 is backspaced by operation ofthe backspace key 40, current of reverse polarity applied to the head 50as fully explained in application S.N. 375,359 erases the incorrectcharacter as the tape is backspaced one letter space through operationof magnet pawl means 259 in a circuit controlled from the spacing dogmeans 261. Operation of the proper key will then cause the correctcharacter to be recorded on the tape T as the latter is fed forward oneletter space by the tape feed pawl operated magnet means 262 a circuitincluding which magnet is controlled through the contact arm of switch78 actuated by the universal bar 26. The tape can be brought to startingposition by operation of the space bar, after which the reader 57 willtake over. In order that the machine will not be inadvertently used as atyper after the correction has been made, an extended portion 263 of thekey stem 151, Fig. 5, is swung clockwise, about its pivot on 154, by thearmature 264 operating through a pull link 265 when a magnet 266 isenergized to unlatch the typer key 147. The latter occurs when theswitch 99 is closed in operation of the bail 94 by a pin 176, but aftermovement of the code slides has been completed in order that the settingof the mechanism controlled by the latched-down typer key will not bedisturbed. The verify key is again latched down for continuation of theverifying operation.

In the event that characters of a single case are to be used noprovision need be made for shiftably mounting the code slide sets 127,128 as one set would suifice. In the present instance where upper andlower case sets are used, they are shifted by operation of the caseshift bellcrank 136 under influence of the case shift magnet 135. Thelatter is energized when a switch 140, Fig. 9, is closed by the downwardmovement of a stud 217 with the type bar segment 28 to cause theprintingto occur in upper case or by the upper portions of the typeheads 51 on which the upper case characters and symbols are formed.

For ease shift by the operator, the usual shift keys 218, Fig. 9, withtheir shift locks 219 are located at opposite sides of the keyboard andare connected by a fulcrum rod 221. The extension 222 of the shift keyat the left side of the keyboard, carries a stud 223 for rocking abellcrank 224 whose arm 226 is connected by' a pull wire 227 With'theupper end of a shift bellcrank 228 pivoted as at 229. The operation ofthe power mechanism 44 through the bellcrank 224, lift pawl 231, powertrip lever 232, roller trip arm 233, roller detent 234, cam roller 236,power arm 237, power arm extension 238 and a pin 239 on the lattercauses a power shift lever 241, bearing on the stud 217, to pull thetype bar segment 28 down against the resistance of its spring 243.Before the shift lever 241 is operated the bellcrank 228 at its free endpushes against a roller 244 carried on a pivoted shift latch 246 toswing the latter counterclockwise against a pin 247 carried on the lowerfree end of a shift catch plate 248 pivoted as at 249 to a bracket 251fixed to the type bar segment 28. The pin 247 is maintained by a spring252 in the shoulder 253 of a detent arm 254, which is urged by a spring256 to raised position against a stud 257. The pin is pushed from theshoulder by the counterclockwise movement of the latch 246 so that theshift lever 241, in low- .9. Bring the segment, need operate onlyagainst the resistance of the spring 243. When the pin has beendisplacedit is latched down. by a notch. 258 in said latch 246, as the lattercontinues its movement. when the segment is pushed down by the action ofthe shift lever 241,. to provide for printing in upper case. When themachine is being used as a typer, the operator, in copying from theoriginal matter, willbe able to print any one of three symbols that areused in case shift operations to designate single shift, shift lock andunshift. These symbols in code form, will be entered on the tape sothat, when the machine is usued as a printer, the particular symbolsensed will control the case shift operation of the machineautomatically.

For the purpose of explaining the control of the mechanism, reference ismade to the wiring diagram of Fig.

11. With the typer key 147 (Fig. latched down to close its switch 190and with the manual switch 279, which is adjacent the backspace key 40on the keyboard (Fig. 3), in open circuit position, operation of anycharacter key will close switch 92 to complete circuits from the line270 to all of the magnets 139 through the closed contacts 220 of switch225 and leads 273. The switches 146, that are closed by movement of theslides 127, complete selected circuits 271, 275 to operate the re corder50. The tape is fed by operation of a spring based pawl 262A controlledby the magnet 262 included in the circuit 270, 274, 275 closed by switchcontact 80 upon each operation of the universal bar 26. The operatorconditions the machine for single case shift, un-- shift, and case shiftlock, manually in the usual manner and causes a symbol to be entered onthe tape for each condition. When the type segment is lowered, by theoperator holding the shift key down for printing an upper casecharacter, the stud 217 of the segment closes switch 140 and throughlead 285; closed switch 287, 286 and 275 actuates the code bar shiftmagnet 135. When the character is printed by the typewriter theoperation of the universal bar 26 closes contact 80 to complete acircuit through the line spacing means 262 via the line 270 and returns274, 286 and 275. When the operator releases the shift key, the stud 217causes the circuit of magnet 135 to be broken with the result that thecode bars are shifted back to lower case by the spring 130. In thetyping operation the operator controls the shift, shift loc and unshiftfunctions of the machine manually from the keyboard as well understood.

When the machine is to print, as automatically controlled from thereader 57, the Printer" key 207 (Fig. 7) is latched down and through bar214 opens switch contact 220 and closes contacts 216 so that the circuitleads 272, 273 from line 270 through the reader 57 energize the magnets139, corresponding to the. character sensed, to move the code bars 127.A circuit through line 280 and the rightmost closed contact 216activates a relay 281 through line 282, closed switch 79 and return 286,275 to close a switch 283 for operating clutch magnet 123 in the circuit270, 284, and 275. Operation of the clutch detent armature 122 willrelease the selector bars 59 so that the key levers can be operated bythe hook links 61. Operation of the universal bar 26 will break therelay circuit by opening contact 79 of switch 78 and will cause the tapefeeding magnet means 262 to operate by closing the contact 80 of switch78 to complete a circuit 270, 274, 286 and 275. Switch 92' will not beclosed as the type keys are operated, because the detent slide link 183has not been shifted by crank 166, and the bellcrank 87 is disabled. Forautomatic case shift operations of the machine, under control of thesymbols on the tape, the code slides are adjusted by the correspondingmagnets 139, so that a single shif selector bar 598 can be operated tocondition the machine for single shift and shift lock through the hooklinks 61S and 61L, respectively. Operation of thesingle shift bar 59Swill cause the stud 217 to a closed shift circuits through thesegment.shift. magnet 277 and the code bar shift magnet by way of 270, 285, 140,and the switch 288 in the case of magnet 277 contact 85' of switch 78,286 and 275. As the switch is closed another switch 289 defined as amake before break switch closes a circuit 270, 274, 286, 275 to energizethe tape feed means 262 so that the next character can be sensed by thereader. When the character so sensed is printed, the universal 26 breaksthe shift circuit and the machine resumes operation. When a shift locksignal is read the selector bar 59L following operation of clutch 114pulls down on the hook 61L to cause case shift and at the same timecloses a switch 276 to activate a relay magnet 290 in line 291 completedby a normally closed switch 269. The magnet 290 will close relaycontacts 292 and 293, the first of which will provide a shunt circuit294 from line 270 through magnet 290, switch 269 and return 291, 275 sothat magnet 290 will be held active after the switch 276 opens. Thecontact 293 completes a circuit from lead 285 through switch 140,magnets 135, 277, switch 288 in the case of 277, line 296, contact 293,return 291 and 275 to hold the segment down and the upper case set ofcode bars raised for extended upper case printing. When an unshiftsignal is detected, the bar 59V lowers and opening switch 269 restoresthe machine to condition for lower case printing when the tape feedingmeans 262 is activated by the operation of a make before break switch289 when the stud 217 raises. The switch 289 is inthe circuit 270, 274,286 and 275.

When the machine is conditioned for verify operation, the verify key 196is latched down and the typer key 147 is held depressed. The contacts216 are closed and the switch 92 remains open, circuits .270; 272, 280operate as a reader but the selector bars 59 are pushed. down by thepins 176 which do not operate to close the switch 99. The clutch 114 hasbeen conditioned for operation mechanically by the depressed typer keyso that the selector bars can be pushed down by the pins. The codeslides 127 are adjusted by the magnets 139 so that the selector bars 59,that corresponds with the character sensed, can be pushed down. Therightmost switch 220, being open, prevents operation of the recorder 50when the switches 146 are closed by operation. of the slides 127. If anerror is detected in the tape during the verifying operation, themachine is conditioned for typing by latching down the Typer key 147.The tape is back-spaced for erasure by operation of the backspace key 40which closes a manually operable switch 279 and a switch 295 to completea circuit from 270 through the magnet of back-space pawl 259 throughline 298, closed contact 85, and lines 286 and 275. When the correctcharacter is typed, a. circuit is completed from 270 through line 297switch 279, closed contact 99 and. lines 286, 275 to energize magnet 266which releases the,

typer key from latched down position so that the operator cannotcontinue typing. The machine is again conditioned for verifying bysetting the verify key 196. In normal typing operation the switch 279 isset to open position manually.

While there has been shown and described what is considered to be adesirable and novel embodiment of the invention, it is obvious thatchanges in form could be made without departing from the spirit of theinvention and it is not the wish to be limited to the precise formherein shown and described, nor to anything less' than the whole of theinvention as hereinbefore set forth and hereinafter claimed.

What I claim as new, and desire to secure by Letters Patent, is:

I. -In atypewriter for recording on a tape code desig nations of databeing typed on a sheet; serrated code slides; selector bars extendinglaterally on said slides;

and key set means for disabling the selector bar moving.

means and enabling said carrier actuating means. 2. In a typewriter forcomparing data being typewritten on a sheet, with coded recordings ofsaid data on a tape;

serrated code slides; a circuit including a tape character reader andmeans for adjusting said slides to align the serrations thereof inaccordance withthe character read from the tape; character selector barsone only of which fits into the aligned slide serrations; key means foroperating a selected type bar to print a character; and key.

movement transfer means normally blocked against operation by saidselector bars and operable to move a selector bar into alignedserrations of the slides when the selected type bar key meanscorresponds to the character read.

3. In a typewriter for printing, recording and comparing data for use ina tape including control means for selectively conditioning thetypewriter for one of said operations; serrated code slides; characterselector bars biased to lower into aligned serrations of said codeslides; bar support means movable to nonsupport posi tion; means forcontrolling operation of said movable means; a circuit including acharacter reader, said control means, and means for adjusting saidslides to align serrations thereof in accordance with a character read;and 1 type bar actuating means associated with each selector bar forprinting the character corresponding to the selector bar lowered intosaid aligned serrations when said .support means moves to non-supportposition.

4; In a typewriter for printing, recording and comparing data for use ina tape including control means for selectively conditioning thetypewriter, for one of said. operations; sets of serrated code slidesarranged in upper and lower case groups; key controlled means forselectively positioning said groups for use; stop-pin carriers coactingwith the selected group of slides; key controlled means for operatingtype bars of the typewriter and for actuating corresponding carriers toposition stop-pins of the latter in serrations of some of the slides ofthe selected group to render the slides immobile; slide moving meansincluding magnet means, a slide circuit for the latter and a switch forcontrolling the circuit operated by the carrier actuating means; and arecording circuit including recording means and switches operated by themovable slides for controlling the operation of said recording meansthrough said second circuit to record the' code designation representedbyfthe movable slides.

5. In a typewriter for printing, recording and comparing data for use ina tape including control means for selectively conditioning thetypewriter for one of said operations; sets of serrated code slidesarranged in upper and lower case groups; key controlled means forselectively positioning either group for use; stop-pin carriers coactingwith the selected group of slides; key controlled means for operatingtype bars of the typewriter and for actuating corresponding carriers toposition stop-pins of the latter in serrations of some of the slides ofthe selected group to render said slides immobile; slide moving meansincluding magnet means, a first circuit for the latter and a' switchoperated by the carrier actuating means for controlling said circuit;and a second circuit including recording means and switches operatedbythe movable slides for controllingtheoperation of said recording meansthrough said second circuit to record the code designation representedby the movable slides.

"6. In a typewriter for printing, recording and comparing data for usein a tape including control means for selectively conditioning thetypewriter for one of said operations; sets of serrated code slidesarranged in upper and lower case groups; means for selectivelypositiomng either group for use; character selector bars biased to lowerinto aligned serrations of the selected group of slides; bar supportmeans movable to non-support position; means for controlling theoperation of said movable means; a circuit including a character reader,said control means, and means for adjusting the selected group of slidesto align serrations thereof in accordance with a character read; andtype bar actuating meansassociated with each selector bar for printingthe character corresponding to the selector bar loweredinto'saidlaligned serrations when said support means moves tonon-supportposition.

, 7. In a machine of the character described; combination encoding anddecoding means including character selector bars; means including keylevers for operating.

said machine; key settable means for adjusting said code means fortyping, verifying and printing operations 1neluding means for blockingoperation of said selector,

bars; typer, verifier and printer keys each selectively settable tocondition said adjusting means for the respec-' tive operations;and'means coacting with said selector bars and said key levers forblocking'operation of the machine in the absence of a setting of any ofsaid conditioning keys.

I 8. In a typewriter for printing, recording and comparing data for usein a tape including control means for selectively conditioning thetypewriter for one of said operations; a combination encoding anddecoding mechanism including parallel code slidm each having serrationsalong an edge thereof; selector means extending across said slidesincluding pins for engagingtheslidesand biased to engage certain alignedserrations thereof to detain the respective slides against movement; keycon-- trolled means for depressing one of said selector means;

circuit means controlled by operation of said selector depressing meansfor moving the slides unrestrained bysaid pins; and switches actuated bysaid last mentioned" slides for controlling a record circuit.

. 9. Ina typewriter for printing, recording and comparing data for usein a tape including control means for selectively conditioning thetypewriter for one of said operations; a combination encoding anddecoding rne'chf anism'including sets of parallel code slides arrangedin upper and lower case groups and each" having serrationsalong theupper edge thereof; means for selectively positioning either of saidgroups for use; selector means extending across said slides includingpins for engaging the slides of a selected group and biased to engagecertain aligned serrations of the selected group to detain therespective slides against movement; key controlled means for depressingone of said selector means; circuit means controlled by operation ofsaid selector depressing means for moving the slides unrestrained bysaid pins; and

switches,actuated by the slides that are moved, for con trolling arecord circuit.

10. In a typewriter for printing; recording and comparing data for usein a tape including control means for selectively conditioning thetypewriter for one of said op-' erations including type bar' printingmeans, power mech anism for operating the printing means and key leversfor controlling the operation of said power mechanism; a combinationencoding means includingparallel code slides each having serrationsalong the upper edge thereof; means for moving saidslides; selectormeans extending across said slides and each including a selector bar andan associated pin carrier mounted for movement to-:

ward and away from saidslides; a plurality ofniieans for individuallyurging the selector bars and the'pincarriers away from the slides;auxiliary means for yieldably 'urging the selector bars supporting theselector barsabove said slides; means for transferring the typing actionof the key levers to the selector bars to cause one of the latter toseat in the serrations aligned by movement of the slides; means fortransferring the typing action of the type bar printing means to the pincarriers to cause one of the latter to seat in the serrations of some ofsaid slides; and means for operatively connecting the selector bars andthe power mechanism for operating the printing means.

T1. In a typewriter for printing, recording and comparing data for usein a tape including control means for selectively conditioning thetypewriter for one of said operations; a code mechanism including aplurality of parallel slides each having code serrations along an edgethereof and selector means extending across said slides includingselector bars pin carrying arms associated with said selector bars, saidslides being selectively movable endwise to provide one group of alignedserrations across the slides and said selector bars and pin arms beingmovable into contact with said slides whereby one bar and one pin armcorresponding to a coded character will seat in said group ofserrations.

12. In a typewriter for printing, recording and comparing data for usein a tape including control means for selectively conditioning thetypewriter for one of said operations; a code mechanism including aplurality of parallel slides each having code serrations in an edgethereof and selector means each corresponding to a character or symbolextending across said slides and each selector means including a pincarrier; and said carrier being movable into contact with all of saidslides to cause the pins thereof to seat in the transversely alignedserrations of some of said slides to render the latter immobile whenmoving force is applied to all of the slides to move those correspondingto the coded character or symbol represented by said selector means.

13. In a typewriter for printing, recording and comparing data for usein a tape including control means for selectively conditioning thetypewriter for one of said op erations; a combination encoding anddecoding mechanism including a plurality of parallel slides each havingcode serrations in an edge thereof; selector means, each correspondingto a character or symbol, extending across said slides and eachincluding a selector bar and a pin carrier; means for moving said bar toseat in code serrations aligned transversely by adjustment of saidslides in decoding; and means for moving said pin carrier to seat in thetransversely aligned serrations of some of said slides to render thelatter immobile when moving force is applied to all of the slides tomove those corresponding to the coded character or symbol represented bysaid selector means in encoding.

14. In a typewriter for printing, recording and comparing data for usein a tape including control means for selectively conditioning thetypewriter for one of said operations; a combination encoding anddecoding mechanism including a plurality of parallel slides each havingcode serrations in the upper edge thereof; selector means, eachcorresponding to a character or symbol, extending transversely of saidslides and movable into contact with the upper edges thereof, eachselector means including a pair of pivoted arms, one constituting aselector bar and the other a yieldable pin carrier, one bar of a singleselector means seating in the transversely aligned serrations of slidesmoved in accordance with the code representing the character or symbolwith which said single selector means corresponds, and the pins of thecarrier of said single selector means seating in the transverselyaligned serrations of slides not representative of the character orsymbol with which said single selector means corresponds, to render saidpin engaged slides immobile.

15. In a typewriter for printing, recording and comparing data for usein a tape including control means toward said slides; lift means for forselectively conditioning the typewriter for one of-said.

operations, including typing key mechanisms; parallel slides each havingcode serrations, one group of serrations representing a character orsymbol and being adapted for alignment to form a channel across theslides when the latter are selectively moved; pivoted selector bars eachcorresponding to a character or symbol represented by a typing keymechanism and extending across said slides; vertically movable liftmeans, including eccentrically mounted lift arms and a lift bar, forsupporting the selector bars above said slides; means for moving saidbars toward the slides when the lift means moves down whereby one ofsaid selector bars will be lowered into the channel formed by thealigned slide serrations corresponding to the character or symbolrepresented by said bar; and a separable connection between each bar andits associated typing key mechanism.

16. A typewriter of the character set forth in claimv .15 wherein theseparable connection includes a pendant on each typing key mechanism; abook link on each se-- lector bar biased out of engagement with saidpendant; a bail common to the hook links of all of said bars; andlatching control key means for moving all of said hook links intooperative relation with said pendants.

17. In a typewriter for printing, recording and comparing data for usein a tape including control means for selectively conditioning thetypewriter for one of said operations, including key means and type baroperating mechanisms controlled thereby, parallel, slides each havingcode serrations, a group of serrations'representing a character orsymbol, being adapted for alignment to form a channel transversely ofthe slides whenv the latter are selectively moved; pivoted selector barseach corresponding to a character or symbol represented by said keymeans, and extending across said slides; means for yieldably supportingthe free ends of said bars; vertically movable lift means, includingeccentric-ally mounted lift arms and a lift bar for holding the selectorbars above said slides; and movement transfer means between each keymeans and each selector bar for moving said bars toward the slidesagainst the resistance of 7 said yieldable support means when the liftmeans moves down, whereby a key corresponding to a bar entering achannel is operable manually to print a character or symbolcorresponding to the code serrations forming said channel.

18. In a typewriter for printing, recording and com paring data for usein a tape including control means for selectively conditioning thetypewriter for one of said operations, including key means and type baroperating mechanisms controlled thereby; parallel slide-s each havingcode serrations; circuit controlled means, including code designationreading means, for selectively moving the slides to align serrationsthereof to provide a transverse channel corresponding to the characteror symbol read; selector bars extending across said slides; cyclicallyoperated means for reciprocating the bars whereby one of them will bemoved into said channel; means operated by the channel engaging bar foractuating the type. bar operating means corresponding to the characteror,

symbol read, and said bar reciprocating means including a clutch, aclutch detent armature for releasing the clutch for a single revolutionaction and a magnet controlled by said reading means circuit foroperating said armature after said slide moving means is actuated.

19. In a typewriter for printing, recording and comparing data for usein a tape including control means for selectively conditioning thetypewriter for one of said operations, including key means and type baroperating means controlled thereby; parallel slides each having codeserrations; means for reading the code designations; means controlled bysaid reading means for selectively moving the slides to align serrationsthereof to provide a transverse channel corresponding to the characteror symbol read; selector means extending across said slides includingselector bars and pin carriers; mean-s controlled by the operation ofsaid type bar operating means for moving said pin carrier into Contactwith said slides; means for reciprocating the bars to cause one of themto move into said channel; means operated by the channel engaging barfor actuating the type bar operating means; and detent means engagingsaid pin carrier moving means to hold the latter against operation bysaid type bar operating means.

20. In a typewriter for printing, recording and comparing data for usein a tape including control means for selectively conditioning thetypewriter for one of said operations including key means and type baroperating means controlled thereby for typing data, the codedesignations of which are to be recorded; serrated code slides; selectormeans extending across said slides including selector bars and a pincarrier associated with each selector bar; means operated by the keymeans for moving the selector bars into engagement with said slides;means actuated by the type bar operating means for moving the pincarriers to cause pins thereof to engage said slides; means fordisabling said selector bar moving means; detent means for blockingoperation of said pin carrier moving means; and said disabling meansbeing operable to move the pin carrier detent to unblocking positionwhen said disabling means is operated.

21. In a typewriter for printing, recording and comparing data for usein a tape including control means for selectively conditioning thetypewriter for one of said operations including keyboard means and typebar operating means controlled thereby for typing data, the codedesignations of which are to be recorded; code mechanism includingserrated code slides; selector means extending across said slidesincluding selector bars and a pin carrier for each selector; lift meansincluding eccentric lift arms and a connecting lift bar for supportingsaid selector bars; means for vertically reciprocating said lift means,including a cyclically operated one revolution clutch, for moving saidselector bars into and out of contact with said slides; a clutch detentarmature; circuit means for operating the armature to release the clutchfor operation; an actuator, including a clutch stop, for operating thearmature detent independently of said circuit means; means fortransferring movement to the selector bars from the keyboard means;means for transferring movement to the pin carriers from the type baroperating means; means for disabling one of the transfer means andenabling the other transfer means, including a crank, a pin on one ofsaid lift arms and a latch link pivoted to said crank; actuator cammeans for engaging the pin and the latch link whereby the latteroperates the crank when the associated lift arm operates; and anadjustable interponent for controlling the operation of said disablingand enabling means through said crank.

22. In a typewriter for printing, recording and comparing data for usein a tape including control means for conditioning the typewriter for aselective one of said operations; code mechanism including serrated codeslides; means, including an operating circuit and a reading circuit, formoving said slides; switch means for con- 16 necting saidcircu its forsimultaneousoperation of said slide moving means; key means foroperating said switch means to condition said circuits for selectiveoperation of said slide moving means; recording'circuit means controlledby the operation'of said selectively operated slide.

moving means, and a switch operated by said key means for breaking thecircuit of said recording means when the reading circuit is conditionedfor simultaneous operation of said slide moving means.

23. In a typewriter for printing, recording and comparing data for usein a tape including control means for selectively conditioning thetypewriter for one of said operations, including a keyboard and type baroperating means controlled thereby; parallel code slides; means formoving said slides simultaneously; recording circuit switches closed bythe slides that are moved; pivoted carriers extending transversely ofsaid slides; yieldably mounted pins in said carriers for engagement withcer-' tain of the serrations in said slides to hold the engaged slidesagainst movement by said slide moving means, and means controlled bysaid type bar operating means for moving said carriers toward saidslides.

24. A typewriter for printing, recording and comparing data, for use ina tape, having control means for se-' lectively conditioning thetypewriter for one of said operations including; parallel serrated codeslides, selector bars extending across said slides, pin carrier armspivoted to said selector bars and adapted to be lowered into alignedserrations in the code slides along with said selector bars, means forholding said selector bars in an elevated position above said codeslides, type key lever and bar actions for printing operation, type barbell crank operated means for lowering said pin arms independently ofsaid selector bars into the code slides, pin

means operated by the type key levers for lowering said;

selector bars into the code slides, hook means on said selectors barsfor operating said type key lever and bar actions in accordance with themovement of said selector bars into said code slides, key set means forselectively enabling said bell crank operated means, said pinmeans andsaid hook means for conditioning the machine for recording, forcomparing and for printing respectively; slide moving means includingmagnet means, circuits for the latter including recording and readingmeans; and

switches actuated by said control means for controlling said circuits.

7 References Cited in the file of this patent UNITED STATES PATENTS1,954,522 Daubmayer Apr.=10, 1934 1,976,615 Jones Oct. 9, 1934 2,030,405Schaaff Feb. 11, 1936 2,390,413 Ayres Dec. 4, 1945 2,456,726 NeuhausDec. 21, 1948 2,540,030 Hamilton Jan. 31, 1951 2,560,474, Potts July 10,1951- 2,605,879 OHalloran Aug. 5, 1952 2,700,446 Blodgett "Jan. 25,1955'

